hi is the GPIO pins 14 to 24 dedicated only for digital...or can we use this for analog also. one more thing what is the voltage range for analog that we can give through GPIO other than other than 3.3v and 1.8v .

On the sky130 caravel chip gpio 7-35 each have an

analog_io

connection. The index is offset by 7. Ex.

io_out[7]

and

analog_io[0]

go to the same pad. On the sky140 caravan chip,

io_analog[0:10]

are pure analog pads, while gpio 7-24 can be used for digital or analog. The analog connections are

gpio_analog[0:17]

or

gpio_noesd[0-17]

. Ex.

io_out[7]

and

gpio_analog[0]

go to the same pad.